How To Overhaul Electrical Equipment

Power secondary equipment constitutes a system, not just the device itself, such as AC, DC, control loops, etc. As some loops have no monitoring means, real-time technical analysis and judgment of the equipment status cannot be performed. Therefore, as far as the application status of electrical secondary equipment is concerned, in a strict sense, most protections do not have the conditions for conditional maintenance.

The planned maintenance system adopted by most of the power equipment in the power system has serious defects, such as frequent temporary maintenance, insufficient or over-maintenance, and blind maintenance. This makes countries all over the world spend a lot of money on equipment maintenance every year. How to arrange the overhaul of power equipment reasonably, save overhaul costs, reduce overhaul costs, and at the same time ensure that the system has high reliability, is an important topic for system operators. With the application of comprehensive intelligent systems such as sensor technology, microelectronics, computer software and hardware and digital signal processing technology, artificial neural network, expert system, fuzzy set theory, etc. in condition monitoring and fault diagnosis, it is based on equipment condition monitoring and advanced diagnosis technology. The research on condition maintenance of the power system has been developed and has become an important research field in the power system.